Sodium Hydroxide → 2-(4-Fluoro-3-isobutyramidophenyl)-3,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxylic acid
反応式
C[O:2][C:3]([C:5]1[CH:6]=[C:7]2[C:12](=[CH:13][CH:14]=1)[NH:11][CH:10]([C:15]1[CH:20]=[CH:19][C:18]([F:21])=[C:17]([NH:22][C:23](=[O:27])[CH:24]([CH3:26])[CH3:25])[CH:16]=1)[C:9]([CH3:29])([CH3:28])[CH2:8]2)=[O:4].[OH-].[Na+]>CO.O>[F:21][C:18]1[CH:19]=[CH:20][C:15]([CH:10]2[C:9]([CH3:28])([CH3:29])[CH2:8][C:7]3[C:12](=[CH:13][CH:14]=[C:5]([C:3]([OH:4])=[O:2])[CH:6]=3)[NH:11]2)=[CH:16][C:17]=1[NH:22][C:23](=[O:27])[CH:24]([CH3:25])[CH3:26]参加物
4
実験手順
A mixture of methyl-2-(4-fluoro-3-isobutyramidophenyl)-3,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxylate (183 mg, 0.46 mmol), sodium hydroxide (312 mg, 7.8 mmol) in methanol/water (10 mL/4 mL) was heated to reflux for 1.5 h. LC-MS indicated that the starting material was consumed completely. The solvent was removed in vacuo and the residue was acidified with 2M hydrochloric acid solution to Ph=5. The precipitated white solid was collected by filtration and dissolved in acetone, dried over anhydrous magnesium sulfate. The solvent was removed in vacuo to give 2-(4-fluoro-3-isobutyramidophenyl)-3,3-dimethyl-1,2,3,4-tetrahydroquinoline-6-carboxylic acid, which was purified by recrystallization from dichloromethane/methanol/Hexant to afford 140 mg of off-white crystal. Yield: 79.3%. LC-MS(M+1)=385.